In the downloadable 2012: Masters Division Challenge for PWT, Abel's Metagross, due to an error, has the illegal move Ice Beam. This error existed in the initial distribution of the tournament, which lasted from November 18 to November 20, 2012, where the tournament was replaced with an updated version where Metagross knew the correct move, Ice Punch.

When this Gengar being escorted through Mt. Freeze and Murky Cave with the player, it knows Leer, Scratch, and Quick Attack, as well as the legitimate move Taunt. These moves are the first four level-up moves learned by Absol or Sneasel, the former is a Pokémon that helps the player in the journey up Mt. Freeze after defeating Articuno for the first time in Frosty Forest.

Illegal move combinations

This is the eighth Trainer in Poké Cup Ultra Ball R-2. While Blastoise can learn these moves by breeding, it cannot learn both simultaneously, as there is no Pokémon in the same Egg Group as Blastoise that can learn both of these moves.

Lt. Surge has this Raichu when fighting him in R-2. While Raichu can learn both of these moves individually, there is no way for it to legally know both moves simultaneously. Surf can only be obtained as a special move as a Pikachu in Pokémon Stadium, while Reversal is a Generation II move that is only obtainable by breeding.

While Exeggutor can learn both of these moves individually, there is no way for it to legally know both moves simultaneously. AncientPower is an Egg move that does not exist in Generation I, while Explosion is a Generation I TM.

All Spearow in the Battle Hall know these two moves simultaneously, despite being an illegal egg move combination. The only Flying Egg Group Pokémon, other than Spearow or Fearow, that can learn Scary Face is Aerodactyl, which cannot learn Quick Attack.

Battle Frontier opponents, except in the Battle Hall, may use a Drowzee with this illegal egg move combination. Drowzee and Hypno can only inherit Assist from Spinda and the Chimchar family, neither of which can learn Barrier.

Battle Frontier opponents, except in the Battle Hall, may use a Gligar with this illegal egg move combination. Gligar and Gliscor can inherit Metal Claw from Scizor, the Nincada family, and (by chain breeding) the Paras family. None of these however can learn Sand Tomb.

Battle Subway opponents may use a Kangaskhan with the illegal move combination of Double Edge and Circle Throw. Kangaskhan can learn both as Egg moves but not simultaneously: Circle Throw requires chain-breeding onto the Whismur family, which cannot learn Double Edge (except by Generation III Move Tutor, but Circle Throw did not exist until Generation V). There is no father in the Monster Egg Group that can learn both simultaneously.